Home / 57,376.32-86,049.84-20,431.68

Finding the Fourth Proportional to 57,376.32, 86,049.84 and 20,431.68

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Solution

The fourth proportional to 57,376.32, 86,049.84 and 20,431.68 is: 30,642.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,376.32 : 86,049.84 = 20,431.68 : x
  2. Step 2: Convert to fraction form
    57,376.32/86,049.84 = 20,431.68/x
  3. Step 3: Cross multiply
    57,376.32x = 86,049.84 × 20,431.68
  4. Step 4: Simplify right side
    57,376.32x = 1,758,142,794.93
  5. Step 5: Solve for x
    x = 1,758,142,794.93/57,376.32
  6. Step 6: Final answer
    x = 30,642.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.